Submarine signal-receiving instrument.



0: BERGER. Y SUBMARINE SIGNAL RECEIVING INSTRUMENT,

APPLICATION FILED NOV. 4, 1912.

1 1? $53 iPatez-ated. Sept. 22,19M.

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NT OFFICE.

CHRISTIAN BERGER, OF NEW YORK, N. Y., ASSIGNOR TO SUBMARINE WIRELESS (JOMTEAN- Y, A CORPORATION OF NEW YORK.

SUBMAB-INE SIGN AL-RECEIYIN G INSTRUMENT.

Specification of Letters Patent.

Patented Sept. 22, 1914.

Application filed November 4, 1912. Serial No. 729,538.

To all whom it may concern 4 Be it known that I, 'I-IRISTIAN BERGER, a subject of the King of ungary, residing at New York, in the county of New York and State of New York, have invented certain new and useful Improvements in Submarine Signal-Receiving Instruments, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to improvements in submarine signal receiving instruments, and more particularly to a receiving instrument adapted to be located at the exterior of a ship or other vessel for receiving'sound or light vibrations and permitting the transmission of the same to an observer or appropriate instrument Within the ship.

Ali object of the present invention is to afford an efiicient receiving instrument, adapted to be employed in submerged location at the exterior of the ship or other vessel.

A further object is to render such a receiving instrument self-adhering, so that it secures itself, barnacle-like, to the exterior of the ship or vessel without the need of bolts, perforations, or other mechanical attac ing means. I

further object is to provide such a de- 3 ice which is applicable to varying positions upon the ships exterior and easily shifted from one point to another.

Another object is to provide an exterior receiving instrument, wherein the perforation of the ships shell is obviated for affording communication from the instrument to the interior.

A further object hereof is to provide anapparatus wherein magnetic force is employed to cause adherence to the ships exterior.

To the attainment of theabove and other objects that will hereinafter appear or will be obvious ,to those skilled in the-art, the present invention consists in the novel ZLI'? rangements, combinations, constructions, and other features hereinafter illustrated and described.

"I, will first describe an embodiment of the present invention and will thereafter. point out the novel features in the claims.

In the accompanying single sheet of drawings forming a part hereof, Figure 1 represents more or less diagrammatically a 1 p'ertio of of a ship or other submerged vessel or body with a submarine slgnal receiving instrument indicatedasapplied to the exterior thereof in submerged posltlon. Fig'. 2 represents in enlarged central cross-section the preferred details of construction of the receiving instrument shown in F ig. 1.

Similar letters of reference designate the corresponding parts in the two figures.

The exterior or shell A, may be that of a ship or vessel, or other submerged body. To the outside surface of this is applied the exterior receiving instrument B of the present invention, the same, like a barnacle, being adapted to adhere or cling to the ships exterior. This receiving instrument B combines the following features or portions, namely: a microphone, by which term I include any like device which-is sensitive to vibration; and a self-adhering base C, adapted to adhere to the ships exterior as set forth; said microphone and'base joined or united into a single instrument, and there being proper communicating means, whether tubes, or wires, or the like, forming a proper connection from the instrument to the interior of the vessel, or to the observer.

Referring first to the base or body C, I prefer to render this self-adhering through the force of magnetism, whereby not only is the perforation of the ship obviated, but the application of the instrument hereof to any part of the ship is permitted. To this end, the base or body 0 may be annularly grooved at D, "for the reception of a magnet coil E placed therein and adapted to be excited for the purpose of rendering the base C strongly magnetic, so asto cling as before explained to the outside, of the iron or steel shell A of the ship or vessel.

Refei-ring next to the vibration-sensitive device, this preferably consists not merely of a'microphone, but of an inclosing casing F, within which is a microphone- The casing F is shown secured at the top or outer side of 1 116 base 0, although obviously the exact relation between the'easing F and the base C might be varied. The outerside of the casing, F is shown asconsisting of a vibrat-' able front wall G, and this wall G serves as a convenient means of communication of signal vibrations in the open water to the microphone H within. The microphone H is shown as so supported (preferably adjustably) within the'casing F as to bear operative relation with-the vibratable .wall or diaphragm G, namely, by means of a support or securing device I.

It will be observed that the instrument above described, not only comprises the selfadhering base and the vibration-sensative device. thereon, but comprises the same in such a relation and arrangement and design as to present a generally roundedshape' or protuberance, so to minimize the resistanceto moving water, and thereby minimize objectionable} vibnat'ions produced by," the movement of the water. 'Qbviously, the cas F and base'C mightjbeinsulated from each other through the use of a dead mate'ria-lsu'ch as soft rubber or the like, to exelude from the microphone the Etch-0110i v1- braitiohs from {the interior of the ship or vessel. v

' As va necessary part of the present invention is, means of communication from the instrument described to" the interior off-the ship, or to an observer, that communication herein being shown 'first, in the form of wires J J wherebythe'microphone maybe placed in electrioeircuit with -.p'r'oper 1n struinentsinside the ship, and second, wires KlK, whereby a powerful. electric current; maybe supplied to the magnetic coils E for.

energizing the magnetic base C, The wires J J K K, accordin' ,hereto, do not need to pass th rough 'a per oration in the ship,-but maybe extended upwardly, as'diagramaticr allyindicated in the figures, to the-deck, 01'

- sired, an indicating means, suchas electricdicatio'n that current is over the gunwale, or through a port-hole of the ship; In practice, instead of four separate wires as roughly "indicated, there wouldbe substituted a single cablecontaining: three or four strands, which on entering thefiteeeiving, instrument would be properly d strihutedfor the purposes hereof.- If derli hts' ih'might be placed as shown, as an inthrough the magnet cois E,

properly passing the above described submarine signal rece ving instrument, it will be. seen that'theobjects and advantages hereinbefore referredto 'ari'efliciehtly attained I It'is obvious that many features of arrangement, construction and detail may be mod fied .without departing from the principles hereof, and I therefore do not wish to berestricted to such features, excepting as set forth in the appended claims. What I- desire to secure by Letters Patent a y '1 For submarine signaling aslgnal rep'oniior of the ships' exterior for ,--.mutual adapted to .eo 'act with a. com

adherence therewith, whereby the instrument may, be held to the ship in submerged locati0n.

2. For submarine signalinga signal receiving instrument adapted to be, employed insubinerged locationat the exterior of a ship or vessel, the-same comprising in comb1nat1on-" a n 1icrephone,,and a self-adhering base bearing the microphone, said base adapted to co act with any plain-surfaced complementary iporti on (if the shi'ps'exterior. formutual ad- "er, nee therewith, whereby the instrument 1 :to'the' ship in submerged location.

3. raw

signaling a signal recei'viiigi'nstriunent' adapted to be employed \in"submergedflhcation at the exterior of ashi "-orv'essel 'the same com risin in-com I bination, a ,m'l'crophone'," and ais'el'f-adhering base bearing". the microphone, said base .portio'n'o'f the ships exterior or mutual lementary' adherence ,"therejwith, jwhereby the instrument maybe held to the ship in submerged location, and exterior conducting means ex- -.tending"-'from said instrument to above the waterdine'and Within the ship for transmitting received signals.

:41 For submar ne signaling a signal re ceiving instrumentadapted to be employed in submerged locationat the exterior of a ship or vessel, the same comprising in combmat1on, a microphone, and aself-adhern'ig base bearing the microphone, said base adapted to co-act with a complementary portion of 'the ships exterior for mutual 'adherence therewith, whereby the instrument may be held to theship in submerged location, and exterior conducting means extend,- ingfrom' s'aidinstrument to above the water-line and Within-the ship for transmitting received signals and ,for maintaining the self-adhering character of the instrument. a

' 5. For submarine signaling a'signal receiving instrument adapted to be employed in submergedlocation at the exterior of a ship or vessel, the same comprising in combination, a microphone, and a'self-adhering base bearing the microphone, said base adaptedto co-act with a complementary portion of the ships exterior for mutual adherence therewith, whereby the instrument maybe held to the'ship in submerged loca tion, and said" base" and microphone designed, fitted andarranged to present an exterior rounded or non-resisting contour.

, 6; For submarine signaling a signal receiving instrument adapted to be employed in submerged location at the exterior of a ship or vessel, the same comprising in combination, a 'IIllCIOPhOIlG, and a magr netizabl'e base bearing the microphone,

tual magnetic adherence therewith, whereby the instrument may be held to the ship in submerged locatio 7.v For submarine signaling asignal receiving instrument adapted tobe employed in submerged location at the exterior of a ship or Vessel, the same comprising in combination, a microphone, and a magnetizable base bearing the microphone, said base adapted to co-act with a-magnetizg able portion of the ships exterior for mutual magnetic adherence therewith, whereby the instrument may be held to'the ship in submerged location at any desired point on the ship without perforation of the latter.

8. For submarine signaling a signal receiving instrument adapted to be employed in submerged location at the exterior of a ship or vessel, the-same comprising in combination, a microphone, and a mag netizable base bearing the microphone, said base adapted to co act with a magnetizable portion of tilt? ships exterior for mutual magnetic adherence therewith, whereby the instrument iijay be held to the ship in submerged location at any desired point on theship without perforation of the latter, and the instrument constructed or incasedto have an outwardly rounded contour.

9. For submarine signaling a signal receiving instrument adapted to be employed in submerged location at the exterior of a sh p or Vessel, the same comprising 1n 'com- I bination, a microphone, and a magnetizable base bearing the microphone, said base containing an electro-magnetic coil adapting it to co-act with a magnetizable portionof the ships exterior for mutualmagnetic adher-- ence therewith, whereby the instrument may be held to the ship in submerged location 10. For submarine signaling a signal receiving instrument adapted to be employed 'in submerged location ship or vessel, the same comprising in combinatioma microphone, and a magnetizable base bearing the microphone, said base containing anelectro-magnetic coil adapting it to coac't with a magnetizable portion of the .ships exterior for mutual magnetic adherence therewith, whereby the instrument may be held to the ship in submerged location, and exterior electrical conductors leading upward from said instrument for conveying signals [therefrom and magnetizing current thereto.

In testimony whereof I affix my signature in presenceflof two witnesses.

CHRISTIAN BERGER.

Witnesses:

JOHN H.-DANIELS, JoHNM. RUSSELL.

at the exterior of a I 

